User blog comment:Ibrahim1004/How those Tobias get so many legendaries ?/@comment-32358261-20171008202716

I think he also has a heatran too. If you look at a specific scene during the sinnoh league arc, there is a heatran at the pokemon Center. I’m guessing that it’s tobias.

It’s confirmed he used a darkrai to sweep all the gyms so it means he caught it before Roark

In the games darkrai can’t be caught that early. You must have the special item to sail to the island. But the port to the island is at canalavd city which is a few more gyms down the track.

So he probably used pkhex